// https://iai.sh.cn/problem/645
#include <bits/stdc++.h>
using namespace std;
#define INF 0x7ffffff
#define maxn 2000000
 

int main() {
  int n;
  cin >> n;
  for (int i = 1; i <= 2 * n; i++) {
    for (int j = 1; j <= 2 * n - i; j++) {
      cout << " ";
    }
    if (i % 2 == 0) {
      for (int j = 1; j <= i / 2; j++) {
        cout << "/__\\";
      }
    } else {
      for (int j = 1; j <= (i + 1) / 2; j++) {
        cout << "/\\  ";
      }
    }
    cout << endl;
  }
  return 0;
}